P2004 on Volkswagen
Intake Manifold Runner Control Stuck Open (Bank 1)
P2004 on Volkswagen vehicles indicates intake manifold runner control stuck open (bank 1). Au7o has documented this code across 2 Volkswagen models — most commonly on Beetle, Jetta. P2004 means the intake manifold runner control for engine bank 1 is stuck in the open position. Many engines use flaps or valves inside the intake manifold that close at low RPM to boost air velocity and torque, then open at higher RPM; this code sets when the computer commands those runners to close but a sensor shows they remain open. The result is usually rough low-speed running, reduced low-end power, or hesitation. It indicates a mechanical or actuator problem in the variable intake system, not a true vacuum or fuel issue. Typical repair costs on Volkswagen range from $300 to $1,200, depending on the specific model and root cause.
Common Causes of P2004
- •Stuck or seized intake manifold runner flaps (carbon buildup)
- •Failed intake manifold runner control actuator or solenoid
- •Disconnected or broken actuator linkage/rod
- •Faulty intake runner position sensor
- •Damaged wiring or connector at the actuator/sensor
- •Vacuum leak or failed vacuum supply on vacuum-operated systems
- •Cracked or warped intake manifold
P2004 on Volkswagen by Model
Volkswagen Beetle(1 issue)
- Intake Manifold Flap Failure2012-2019
The intake manifold runner flaps on the Beetle's 2.0T and 1.8T engines can fail due to carbon buildup or actuator motor burnout. The flaps are designed to improve low-end torque by varying intake runner length, but they become stuck with carbon deposits over time. A failed flap actuator triggers a check engine light and can cause rough running and reduced power.
Volkswagen Jetta(1 issue)
- 2.5L 5-Cylinder Intake Manifold Runner Failure2005-2014
The 2.5L inline-5 engine in the MK5 Jetta develops intake manifold runner flap failures. The plastic flaps inside the manifold crack or stick, causing rough idle, power loss, and check engine lights.
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View P2004 across all makes →Frequently Asked Questions
What does P2004 mean on Volkswagen?▼
P2004 stands for "Intake Manifold Runner Control Stuck Open (Bank 1)." P2004 means the intake manifold runner control for engine bank 1 is stuck in the open position. Many engines use flaps or valves inside the intake manifold that close at low RPM to boost air velocity and torque, then open at higher RPM; this code sets when the computer commands those runners to close but a sensor shows they remain open. The result is usually rough low-speed running, reduced low-end power, or hesitation. It indicates a mechanical or actuator problem in the variable intake system, not a true vacuum or fuel issue. On Volkswagen specifically, this code is documented across 2 models.
What causes P2004 on Volkswagen vehicles?▼
Common causes on Volkswagen: Stuck or seized intake manifold runner flaps (carbon buildup), Failed intake manifold runner control actuator or solenoid, Disconnected or broken actuator linkage/rod, Faulty intake runner position sensor, Damaged wiring or connector at the actuator/sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2004 on a Volkswagen?▼
Repair costs on Volkswagen range from $300 to $1,200, depending on the specific model and root cause.
Which Volkswagen models have P2004 documented?▼
Au7o has documented P2004 on 2 Volkswagen models: Beetle, Jetta.